I switched to a openwrt wifi access point and now my devices connected by wifi can't talk to each other :( It took forever to get to that point. At first I thought the raspberry playing my music had an issue and stopped running mpd. When ssh to it failed, I guessed it didn't connect to new wifi (despite showing weather on its tiny screen). Now I found I can jump through my home server and it works plus I can't access my wifi connected printer. Which explains it not working anymore...